System PartsCâu 23 / 60
How are the service brakes applied in an air brake vehicle?
a.By pressing the brake pedal, which sends air to the brake chambers
b.By pulling the yellow parking brake knob
c.By turning off the engine
d.By draining the air tanks
Giải thích
The service brakes are the normal driving brakes and are applied by pressing the brake pedal. Pressing the pedal sends air to the brake chambers, which move the pushrods and apply the brakes. Releasing the pedal lets the air out and releases the brakes.
Luyện miễn phí toàn bộ 60 câu hỏi — không cần đăng ký.
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